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Topic: photoperiodism

Burst of morning gene activity tells plants when to flower

For angiosperms -- or flowering plants -- one of the most important decisions facing them each year is when to flower. It is no...

Carnivores in captivity and in wild give birth at the same time of year

Many species have a specific mating season when living in their natural habitat. The young ani-mals are usually born in spring when environmental conditions...